<!DOCTYPE html>
<html>

<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width,initial-scale=1.0">
  <title>buttons</title>
  <link rel="stylesheet" href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u"
    crossorigin="anonymous">
</head>

</body>
<div style="margin:30px">
  <button class="btn btn-primary btn-sm">测试1</button>
  </br>
  </br>
  <button class="btn btn-primary btn-sm">测试1</button>
  </br>
  </br>
  <button class="btn btn-primary btn-sm">测试1</button>
  </br>
  </br>
  <button class="btn btn-primary btn-sm">测试1</button>
  </br>
  </br>
  <button class="btn btn-primary btn-sm">测试1</button>
  </br>
  </br>
  <button class="btn btn-primary btn-sm">测试1</button>
  </br>
  </br>
  <button class="btn btn-primary btn-sm">测试1</button>
  </br>
  </br>
  <button class="btn btn-primary btn-sm">测试1</button>
  </br>
  </br>
  <button class="btn btn-primary btn-sm">测试1</button>
  </br>
  </br>
  <button class="btn btn-primary btn-sm">测试1</button>
  </br>
  </br>
  <button class="btn btn-primary btn-sm">测试1</button>
  </br>
  </br>
</div>
</body>

</html>
